#include <format>
#include <iostream>
#include <string>
using namespace std;
int main() {
  int a = 1;
  unsigned int b = 2;
  float c = 2.f;
  double d = 2.0;
  constexpr char *e = "hello";
  string f = "hello world";
  cout << format(
      "int a = {} unsigned int b = {} float c = {} double d = {} c string = "
      "{} string d = {}",
      a, b, c, d, e, f);
}
